Studies on the shade-endurance capacity of Glycyrrhiza uralensis.
- Author:
Sheng-li WEI
1
;
Wen-quan WANG
;
Xiu-hua CHEN
;
Shu-ying QIN
;
Xiu-tian CHEN
Author Information
- Publication Type:Journal Article
- MeSH: Adaptation, Physiological; Chlorophyll; analysis; Glycyrrhetinic Acid; analysis; Glycyrrhiza uralensis; chemistry; growth & development; physiology; Photosynthesis; Plant Components, Aerial; anatomy & histology; Plant Leaves; anatomy & histology; chemistry; physiology; Plant Roots; chemistry; Plants, Medicinal; chemistry; growth & development; physiology; Sunlight; Trees; growth & development
- From: China Journal of Chinese Materia Medica 2005;30(2):100-104
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo study the shade-endurance property of Glycyrrhiza uralensis and provide rationale for the practice of inter-cropping G. uralensis with trees.
METHODBlack shading nets were used to provide five different environments of light intensities (light penetration rates of 100%, 75%, 65%, 50% and 25%, respectively). To assess the shade-endurance capacity of G. uralensis, several aspects were evaluated, including growth characters, physiological and ecological characters, biomass, and chemical contents.
RESULT AND CONCLUSIONG. uralensis is a light-favored plant. The growth indices such as plant height, stem diameter, leaves number, root diameter, biomass, and daily average photosynthetic rate (Pn) are highest when light permeation rate is 100%. All these indices decrease when light intensity decreases. However, G. uralensis possesses shade-endurance capacity to some degree; it adapts to the shading environment by increasing the leaf area and chlorophyll contents. Shading has no obvious effect on the absolute light energy utilization rate (Eu) or Fv/Fm ratio. The influence of shading on the chemical contents of G. uralensis is obvious.
